Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1998-03-03
1999-01-05
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570177, C07C 1738
Patent
active
058565957
ABSTRACT:
A 1,1,1,3,3,3-hexafluoropropane product of greater than about 99.9 weight percent purity containing less than about 100 parts per million unsaturated fluorocarbons and a method for its purification from a distillation mixture of 1,1,1,3,3,3-hexafluoropropane with at least one unsaturated fluorocarbon which method includes the steps of:
a) reacting the mixture with chlorine to saturate the unsaturated fluorocarbons,
b) washing the reacted mixture with an aqueous solution to remove residual hydrochloric acid and chlorine,
c) removing the aqueous solution, and
d) distilling the reacted mixture to obtain a 1,1,1,3,3,3-hexafluoropropane product of greater than about 99.9 weight percent purity containing less than about 100 parts per million unsaturated fluorocarbons.
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patent: 5395997 (1995-03-01), Van Der Puy et al.
patent: 5414165 (1995-05-01), Nappa et al.
Jane C. Bare, Identifying and Evaluting Alternatives to CFC-114 for Navy Shipboard Chillers, ASHRAE Journal, Jan., 1996.
Fleming Kim Marie
Merkel Daniel Christopher
Smith Addison Miles
Allied-Signal Inc.
Friedenson Jay P.
Siegel Alan
Szuch Colleen D.
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